oj.uz

Submission #1103680

# Submission time Handle Problem Language Result Execution time Memory
1103680 2024-10-21T14:14:41 Z Zero_OP Catfish Farm (IOI22_fish) C++17
9 / 100
 57 ms 30028 KB 
#include <bits/stdc++.h>
#ifndef LOCAL
    #include <fish.h>
#endif // LOCAL

using namespace std;

#define rep(i, l, r) for(int i = (l), _r = (r); i < _r; ++i)
#define FOR(i, l, r) for(int i = (l), _r = (r); i <= _r; ++i)
#define ROF(i, r, l) for(int i = (r), _l = (l); i >= _l; --i)
#define all(v) begin(v), end(v)
#define compact(v) v.erase(unique(all(v)), end(v))
#define sz(v) (int)v.size()
#define dbg(x) "[" #x " = " << (x) << "]"

template<typename T>
bool minimize(T& a, const T& b){
    if(a > b) return a = b, true; return false;
}

template<typename T>
bool maximize(T& a, const T& b){
    if(a < b) return a = b, true; return false;
}

using ll = long long;
using ld = long double;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template<typename T> T random_int(T l, T r){ return uniform_int_distribution<T>(l, r)(rng); }
template<typename T> T random_real(T l, T r){ return uniform_real_distribution<T>(l, r)(rng); }

const int MAX = 3e5 + 5;

int n, m;
struct fish{
    int x, y, w;
} fishes[MAX];

namespace subtask1{
    bool check(){
        rep(i, 0, m) if(fishes[i].x& 1) return false;
        return true;
    }

    ll solve(){
        ll sum = 0;
        rep(i, 0, m){
            if((i > 0) || (i < n - 1)){
                sum += fishes[i].w;
            }
        }
        return sum;
    }
}

namespace subtask2{
    bool check(){
        for(int i = 0; i < m; ++i){
            if(fishes[i].x > 1) return false;
        }
        return true;
    }

    ll sum[3][MAX];
    ll f[3][MAX], g[3][MAX];

    ll solve(){
        memset(f, 0, sizeof(f));
        memset(g, 0, sizeof(g));

        rep(i, 0, m){
            sum[fishes[i].x][fishes[i].y] += fishes[i].w;
        }

        rep(i, 0, 2){
            rep(j, 0, n){
                sum[i][j] += (j > 0 ? sum[i][j - 1] : 0);
            }
        }

        ll ans = max(sum[0][n - 1], sum[1][n - 1]);
        if(n > 2){
            rep(i, 0, n){
                maximize(ans, sum[1][n - 1] - sum[1][i] + sum[0][i]);
            }
        }

        return ans;
    }
}

ll max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W){
    n = N;
    m = M;
    rep(i, 0, M) fishes[i] = {X[i], Y[i], W[i]};

    if(subtask1::check()) return subtask1::solve();
    if(subtask2::check()) return subtask2::solve();
    return -1;
}

#ifdef LOCAL
int main(){
    cout << max_weights(2, 2, {0, 0}, {0, 1}, {4, 5}) << '\n'; //sub1
    cout << max_weights(3, 2, {0, 1}, {0, 1}, {4, 5}) << '\n'; //sub2
    cout << max_weights(5, 4, {0, 1, 4, 3}, {2, 1, 4, 3}, {5, 2, 1, 3}) << '\n';
}
#endif // LOCAL

Compilation message

fish.cpp: In function 'bool minimize(T&, const T&)':
fish.cpp:18:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   18 |     if(a > b) return a = b, true; return false;
      |     ^~
fish.cpp:18:35: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   18 |     if(a > b) return a = b, true; return false;
      |                                   ^~~~~~
fish.cpp: In function 'bool maximize(T&, const T&)':
fish.cpp:23:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   23 |     if(a < b) return a = b, true; return false;
      |     ^~
fish.cpp:23:35: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   23 |     if(a < b) return a = b, true; return false;
      |                                   ^~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 4176 KB Output is correct
2 Correct 17 ms 4688 KB Output is correct
3 Correct 1 ms 2552 KB Output is correct
4 Correct 1 ms 2384 KB Output is correct
5 Correct 57 ms 14676 KB Output is correct
6 Correct 55 ms 11344 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 19024 KB Output is correct
2 Correct 32 ms 27940 KB Output is correct
3 Correct 39 ms 30028 KB Output is correct
4 Correct 16 ms 5716 KB Output is correct
5 Correct 19 ms 6484 KB Output is correct
6 Correct 3 ms 19192 KB Output is correct
7 Correct 2 ms 19028 KB Output is correct
8 Correct 3 ms 19028 KB Output is correct
9 Correct 2 ms 19028 KB Output is correct
10 Correct 1 ms 2388 KB Output is correct
11 Correct 1 ms 2388 KB Output is correct
12 Correct 22 ms 24404 KB Output is correct
13 Correct 21 ms 25172 KB Output is correct
14 Correct 18 ms 24404 KB Output is correct
15 Correct 19 ms 24668 KB Output is correct
16 Correct 19 ms 22612 KB Output is correct
17 Correct 20 ms 23124 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2384 KB Output is correct
2 Incorrect 1 ms 2384 KB 1st lines differ - on the 1st token, expected: '882019', found: '-1'
3 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2384 KB 1st lines differ - on the 1st token, expected: '3', found: '-1'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2384 KB 1st lines differ - on the 1st token, expected: '3', found: '-1'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2384 KB 1st lines differ - on the 1st token, expected: '3', found: '-1'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2384 KB Output is correct
2 Incorrect 1 ms 2384 KB 1st lines differ - on the 1st token, expected: '882019', found: '-1'
3 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 4176 KB Output is correct
2 Correct 17 ms 4688 KB Output is correct
3 Correct 1 ms 2552 KB Output is correct
4 Correct 1 ms 2384 KB Output is correct
5 Correct 57 ms 14676 KB Output is correct
6 Correct 55 ms 11344 KB Output is correct
7 Correct 3 ms 19024 KB Output is correct
8 Correct 32 ms 27940 KB Output is correct
9 Correct 39 ms 30028 KB Output is correct
10 Correct 16 ms 5716 KB Output is correct
11 Correct 19 ms 6484 KB Output is correct
12 Correct 3 ms 19192 KB Output is correct
13 Correct 2 ms 19028 KB Output is correct
14 Correct 3 ms 19028 KB Output is correct
15 Correct 2 ms 19028 KB Output is correct
16 Correct 1 ms 2388 KB Output is correct
17 Correct 1 ms 2388 KB Output is correct
18 Correct 22 ms 24404 KB Output is correct
19 Correct 21 ms 25172 KB Output is correct
20 Correct 18 ms 24404 KB Output is correct
21 Correct 19 ms 24668 KB Output is correct
22 Correct 19 ms 22612 KB Output is correct
23 Correct 20 ms 23124 KB Output is correct
24 Correct 1 ms 2384 KB Output is correct
25 Incorrect 1 ms 2384 KB 1st lines differ - on the 1st token, expected: '882019', found: '-1'
26 Halted 0 ms 0 KB -